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Diodes Incorporated 74LVCE1G126SE-7
- Part No.:
- 74LVCE1G126SE-7
- Manufacturer:
- Diodes Incorporated
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
74LVCE1G126SE-7.pdf
- Description:
- IC BUF NON-INVERT 5.5V SOT353
- Quantity:
- Payment:
- Shipping:
Inventory:4,762
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Product details
Overview
74LVCE1G126SE-7 from Diodes Incorporated is a single non-inverting buffer gate with 3-state output, designed for voltage-level shifting and bus driving in mixed-voltage systems. It operates from 1.4V to 5.5V, tolerates 5.5V inputs, delivers ±24mA output drive at 3.3V, and supports partial power-down via IOFF circuitry-enabling signal isolation in powered-down subsystems of portable computing and consumer electronics.
For engineers reviewing the 74LVCE1G126SE-7 datasheet, 74LVCE1G126SE-7 pinout, 74LVCE1G126SE-7 application, or 74LVCE1G126SE-7 equivalent, this device is selected for low-voltage logic interfacing where supply flexibility, 3-state control, ESD robustness (2kV HBM), and thermal performance in SOT353 packaging are critical design requirements.
Technical Context
This CMOS buffer implements active-high output enable (OE) control to place the Y output in high-impedance state, decoupling driven buses during power sequencing or standby. Its IOFF feature disables both output FETs when VCC = 0V, preventing back-current flow from live I/O lines into unpowered logic domains.
Characterized across 1.5V–5.5V supply range, it achieves 3.0ns max propagation delay (tpd) at 3.3V/15pF and 3.6ns at 5V/15pF. Input thresholds scale with VCC (e.g., VIH = 0.7×VCC at 4.5–5.5V), enabling reliable TTL-level compatibility and multi-rail interoperability without external level shifters.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 1.4V to 5.5V - enables direct interface between 1.8V, 2.5V, 3.3V, and 5V logic domains |
| Output Drive Strength | ±24mA at 3.3V - sufficient to drive 15pF loads with <3.0ns tpd while maintaining VOL ≤0.55V and VOH ≥2.3V |
| Input Voltage Tolerance | Up to 5.5V - allows safe connection to higher-voltage buses without clamping diodes or resistors |
| IOFF Leakage Current | ±10μA max at 5.5V - ensures negligible current injection during partial power-down states |
| ESD Robustness | 2000V HBM, 200V MM - meets industrial-grade immunity requirements without external protection |
| Propagation Delay | 0.4–3.0ns (VCC = 1.5–3.3V, CL = 15pF) - supports >300MHz data rates in repeater applications |
Pinout & Package
SOT353 (SC-70-5) package: 5-pin surface-mount, 1.25mm × 2.1mm footprint, 0.65mm pitch, JEDEC MO-203-DA compliant. Thermal resistance θJA = 371°C/W on FR-4 with minimum pad layout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - A | Data Input | Non-inverting logic input; accepts 0–5.5V signals regardless of VCC level |
| 2 - OE | Output Enable (active-high) | Drives Y to high-impedance when LOW; must be pulled HIGH or LOW via external resistor if unused |
| 3 - Y | Buffered Output | 3-state CMOS output; sinks or sources up to ±24mA at 3.3V with rail-to-rail swing |
| 4 - GND | Ground Reference | Primary return path for output current and internal logic; requires low-inductance connection |
| 5 - Vcc | Power Supply | Core supply pin; bypass capacitor (0.1μF ceramic) required within 3mm of this pin |
Key Features
| Feature | Design Value |
|---|---|
| Extended supply range (1.4–5.5V) | Eliminates need for separate LDOs when interfacing legacy 5V peripherals with modern 1.8V controllers |
| IOFF partial power-down support | Prevents destructive backflow current from live 3.3V buses into unpowered 1.4V subsystems during sleep mode |
| 5.5V-tolerant inputs | Enables direct connection to 5V microcontroller GPIOs without level-shifter ICs or resistive dividers |
| ±24mA drive at 3.3V | Drives two 74LVC inputs or one 50Ω transmission line with controlled edge rates and minimal overshoot |
| Low dynamic power (19pF Cpd) | Reduces switching noise and supply ripple in battery-powered devices operating at 10MHz clock rates |
Applications
| PC & Notebook I/O Expansion | USB Hub Signal Isolation |
|---|---|
|
Use Scenario: Isolating USB 2.0 D+/D− lines between host controller and downstream ports during suspend/resume cycles. IC Role / Device Role / Timing Role: 3-state buffer enabling/disabling signal paths under firmware control to prevent bus contention during power transitions. Use Value: IOFF prevents current leakage from active 3.3V USB PHY into suspended 1.8V hub controller, eliminating need for external analog switches. |
Use Scenario: Level-shifting UART debug signals between a 5V MCU and 1.8V SoC in embedded diagnostics subsystems. IC Role / Device Role / Timing Role: Non-inverting voltage translator with rail-compatible inputs, preserving signal integrity across supply domains. Use Value: 5.5V-tolerant A input accepts 5V TTL logic directly; Y output swings fully to 1.8V rails without external biasing. |
| Hard Disk Drive Interface | Set-Top Box IR Receiver Front-End |
|
Use Scenario: Driving SATA LED activity indicators from low-voltage ASIC GPIOs while sharing 5V board supply. IC Role / Device Role / Timing Role: Bus driver buffering and voltage translation for status signaling in mixed-supply storage enclosures. Use Value: ±24mA drive capability lights standard 20mA LEDs directly; 3.3V operation minimizes heat in space-constrained HDD bays. |
Use Scenario: Conditioning raw IR demodulator output before feeding to 3.3V microcontroller interrupt pin. IC Role / Device Role / Timing Role: Schmitt-trigger-free digital buffer providing noise margin and load isolation for weak IR signal paths. Use Value: Low input capacitance (3.5pF) preserves rise/fall times of 38kHz carrier bursts; 2000V HBM withstands ESD events near front-panel sensors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar non-inverting 3-state buffer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| SN74LVC1G126DBVR | TI part; identical 5-pin SOT23-5 package but rated only to 1.65–5.5V min VCC; no 1.4V operation | Lacks sub-1.65V functionality; unsuitable for ultra-low-power 1.4V sensor nodes | Select when system VCC never drops below 1.65V and TI supply chain preference applies |
| 74AUP1G126GW,125 | Nexperia part; 0.8–3.6V range, lower ICC (0.5μA typ), but only ±4mA drive at 3.3V | Insufficient drive for LED or transmission-line loads; optimized for ultra-low static power, not speed/strength | Select for always-on battery monitoring circuits where 4mA drive suffices and 0.5μA ICC is critical |
Compared with SN74LVC1G126DBVR and 74AUP1G126GW,125, the 74LVCE1G126SE-7 uniquely supports 1.4V operation with ±24mA drive-making it the only choice for 1.4–5.5V scalable I/O buffering where both deep-sleep compatibility and robust bus driving are required.
Availability
74LVCE1G126SE-7 is available at Aetrix Electronics and suitable for PC motherboard I/O expansion, USB peripheral isolation, and hard disk drive status signaling requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for 74LVCE1G126SE-7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Diodes Incorporated is a global manufacturer of discrete semiconductors and analog ICs, specializing in high-reliability, cost-optimized components for computing, consumer, and industrial markets.
The 74LVCE logic family targets mixed-voltage interface challenges in portable and embedded systems, emphasizing wide supply range, IOFF safety, and robust ESD tolerance without sacrificing speed or drive strength.
FAQ
What is the minimum operating voltage for 74LVCE1G126SE-7?
The device is fully specified from 1.4V to 5.5V. At 1.4V, it guarantees tpd ≤6.9ns (CL=15pF) and VIH/VIL thresholds scaled to 0.65×VCC and 0.35×VCC respectively. Operation below 1.4V is not characterized and may result in undefined logic states or increased ICC.
Can OE be left floating in circuit design?
No. The OE pin has no internal pull-up or pull-down. Floating OE causes indeterminate output state and potential bus contention. Diodes Incorporated recommends tying OE to VCC via 10kΩ resistor for active-high default or to GND for permanently enabled operation.
Does 74LVCE1G126SE-7 support hot insertion?
Yes-its IOFF circuitry actively disables outputs when VCC = 0V, preventing back-current from live signal lines into unpowered circuitry. This meets JEDEC JESD78 Class II latch-up immunity (>100mA) and enables safe hot-plug operation in modular backplane systems.
How does thermal performance compare across SOT25, SOT353, and DFN1410 packages?
SOT25 offers lowest θJA (204°C/W), SOT353 is mid-range (371°C/W), and DFN1410 highest (430°C/W). For 100mW dissipation at TA=85°C, junction temperature rises by 20.4°C (SOT25), 37.1°C (SOT353), or 43.0°C (DFN1410)-making SOT25 optimal for thermally constrained layouts.
74LVCE1G126SE-7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- 74LVCE
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- 3-State
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.4V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-353
74LVCE1G126SE-7 FAQ
1.How can I place an order for 74LVCE1G126SE-7 through Aetrix?
Please submit a Request for Quotation (RFQ) for 74LVCE1G126SE-7 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for 74LVCE1G126SE-7 reliable?
The price and inventory of 74LVCE1G126SE-7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for 74LVCE1G126SE-7 is usually 5 days.
3.What payment methods are accepted for 74LVCE1G126SE-7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for 74LVCE1G126SE-7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for 74LVCE1G126SE-7?
74LVCE1G126SE-7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your 74LVCE1G126SE-7 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for 74LVCE1G126SE-7?
For technical support, including 74LVCE1G126SE-7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your 74LVCE1G126SE-7 requirements.
6.How does Aetrix verify that 74LVCE1G126SE-7 is sourced from the original manufacturer or authorized distributors?
All 74LVCE1G126SE-7 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that 74LVCE1G126SE-7 meets industry standards.
7.What is the process for return or replacement of 74LVCE1G126SE-7?
All 74LVCE1G126SE-7 units undergo pre-shipment inspection (PSI). If there is an issue with 74LVCE1G126SE-7, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The 74LVCE1G126SE-7 part is unused and in its original packaging.
Return procedure for 74LVCE1G126SE-7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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